NOBUG: Keep backup YYYYMMDD on sync with 2.5
MDL-39374 log only real folder edits

Credit goes to Florian Zillner, thanks.
MDL-39678 fix YUI 20130515 vulnerability
MDL-39697 theme_bootstrapbase: Updated $THEME->layouts in config.php to match those in Base theme.
Merge branch 'w18_MDL-39678_m25_yui' of git://github.com/skodak/moodle into MOODLE_25_STABLE
Merge branch 'MDL-28250-25' of git://github.com/danpoltawski/moodle into MOODLE_25_STABLE
MDL-38369 repository: Remove output before redirect
MDL-39198 theme_formal_white: resized and relocated the "Add..." drop down menu of the "Add a block" pseudo block
MDL-39630 theme_afterburner: Improving the way course/category listings display.
Merge branch 'MDL-39528_25' of git://github.com/dmonllao/moodle into MOODLE_25_STABLE
Merge branch 'MDL-39363-master' of git://github.com/ankitagarwal/moodle into MOODLE_25_STABLE
MDL-36020 overview/report: fix quiz regrade session lock
MDL-39728 List all the classes in question/type/questionbase.php

This should make it easier for people to understand the type hierarchy.
MDL-27748 question: grade options should be localised.

question_bank::fraction_options should use format_float to display
decimal pionts correctly.
MDL-38498 repository: Unit tests for repository::check_capability()
MDL-39719 course: Pointing to wrong category string in requests
Merge branch 'MDL-38498-25' of git://github.com/FMCorz/moodle into MOODLE_25_STABLE
Merge branch 'w18_MDL-39374_m25_folderlog' of git://github.com/skodak/moodle into MOODLE_25_STABLE
MDL-39758 theme_bootatrapbase: Added missing layout/embedded.php.
MDL-39753 Add 2.5.0 upgrade line